Advertisement
Advertisement
archaea
1[ ahr-kee-uh ]
plural noun
, Microbiology.
, singular ar·chae·on [ahr, -kee-on].
- a group of microorganisms, including the methanogens and certain halophiles and thermoacidophiles, that have RNA sequences, coenzymes, and a cell wall composition that are different from all other organisms: considered to be an ancient form of life that evolved separately from bacteria and algae and classified as constituting the domain Archaea.
Archaea
2[ ahr-kee-uh ]
noun
, (used with a singular or plural verb)
- (in the three-domain system of classification) the taxonomic domain comprising the archaea.
Discover More
Word History and Origins
Origin of archaea1
First recorded in 1985–90; from New Latin, from Greek archaîa, neuter plural of archaîos “ancient”; archaeo- ( def )
Origin of archaea2
First recorded in 1990–95; from New Latin; archaea ( def )
Discover More
Example Sentences
Archaea are single-celled microorganisms that are similar to bacteria but differ in compositions.
From Nautilus
Advertisement
Advertisement
Advertisement
Advertisement
Browse